package com.jy.adscm.operation.mask.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * @author zyl
 * @Date 2020/4/2 -9:42
 */
@Configuration
@EnableAsync
public class ExecutorConfig {

    private static final Logger logger = LoggerFactory.getLogger(ExecutorConfig.class);
    @Bean
    public Executor asyncServiceExecutor() {
        logger.info("start asyncServiceExecutor");

        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();

        // ThreadPoolTaskExecutor executor = new VisiableThreadPoolTaskExecutor();

//配置核心线程数

        executor.setCorePoolSize(5);

//配置最大线程数

        executor.setMaxPoolSize(5);

//配置队列大小

        executor.setQueueCapacity(99999);

//配置线程池中的线程的名称前缀

        executor.setThreadNamePrefix("async-service-");

// rejection-policy：当pool已经达到max size的时候，如何处理新任务

// CALLER_RUNS：不在新线程中执行任务，而是有调用者所在的线程来执行

        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());

//执行初始化

        executor.initialize();

        return executor;

    }

}
